Lubricant-dispensing device



Patented May 31, 1927.

EDWIN J. HOLST, LAKE CITY, MINNESOTA.

' LIl'BRIGANT-DISPENSING DEVICE.

Application filed January 11, 1926. Serial No. 80,648.

This invention relates to lubricant dispensing devices, and has moreparticular reference to a device of this kind adapted to be employed forapplying oil or other lubricants to various parts of machinery and thelike.

The primary object of the invention is to provide an improved deviceadapted tobe carried in the hand when in use and to take the place ofconventional forms of oil cans now in general use. I

A specific object of the invention 1s to provide a lubricant applyingdevice of the above kind which is extremely simple and durable inconstruction as well as eiiicient in operation and arrangement of partshereinafter more fully described, shown in the accompanying drawing, andclaimed.

In the drawings, wherein like reference characters indicatecorresponding parts throughout the several views.

Figure 1 is a central view of a limited applying device constructed inaccordance with the present in- 'vention;

Figure 2 is a top plan view thereof;

Figure 3 is an end elevational view of the same looking towards theright of Figure 1; and

. Figure 4 is a transverse section taken upon line 4--4 of Figure 1.

The present lubricant applying device is constructed in the general formof a pistol and embodies a barrel including an inner section 5 having adepending hollow hand longitudinal sectional grip 6 rigid therewith, thebarrel section 5 and hand. grip 6 being preferablyformed integral and ofsheet metal as shown. The barrel further includes an outer section 7,the inner end of which is detachably secured on the outer or forward endof the inner section 5 by means of bayonet s'lot connections or the likeas generally indicated at 8. The outer end of the forward or outerbarrel'seetion 7 is'equipped with a suitable closure cap 9 or'the likewhich is detachably held in place preferably by means of bayonet slotconnections 10 and which is provided with a central forwardly projectinoutlet nozzle 11- through which the lubricant is adapted to be dispensedfrom the-forward barrel section 7 in a manner which will presentlybecome apparent.

Slidable longitudinally in the outer barrel section7 is alubricantejecting piston or plunger 12 which is attached to the forwardend of a rod 13 which is adapted to project to a point adjacent theinner end of the inner barrel section 5 when the piston 12 is retractedto the inner end portion of the barrel. section 7 as shown clearly inFigure 1. The piston rod 13 is provided with ratchet teeth 14 on itsunder side and substantially from end to end thereof, and pivotedintermediate its ends within the lower portion of the inner barrelsection 5 as indicated at 15 is a" trigger 16 which has a pawl 17pivoted to 30 the upper end thereof in position to have its forward endengage the ratchet teeth 14 of the rod 13. The trigger 16 projectsdownwardly through a slot 18 in the lower portion of the barrel section5 so that the same Y may be conveniently actuated by a finger of theusers hand gripping the hand-grip member 6. Suitable means is providedfor yieldingly swinging the pawl 17 into engagement with the'ratchetteeth 14:, and the means shown for this purpose embodies a helicaltension spring 19 attached at its forward end, to the rear end of thepawl 17 and at its rear end to the hand-grip 6 within the upper endportion of the latter. It will thus be'seen that by repeatedly forcingrearward- I 1y upon the lower end of the trigger 16"and then allowingthe spring 19- to. return the trigger to normal position, the pawl 17may be caused to cooperate with the ratchet teeth 14 on the piston rod13 so as to feed the piston 12 forwardly or. outwardly 1n the outerbarrel section 7 with a step by step movement. In the use of the devicethe dos ure'9 is removed and the barrel section 7 is filled withlubricant in advance of the piston -12 so that upon each outwardorforward movement of the piston 12 a quantity of' rearwardly to anexcessive distance as indicated by dotted lines in Figure 1 so as toin'g'pivoted against the ad'acent side of the" trigger 16as shown. If

. guard 21 may be provided for t-he'trigger 16.

' effect swinging of the pawl 17 entirely out of '25 engagement with theteeth 14 of the rod 13. In order to positively prevent tilting of thepawl 17 about its pivot ina clockwise direction to engage the teeth 14when the trigger 17 is forced re'arwardly to the above mentionedexcessive distance,- a pin 20 may be provided in the ath of the innerend of said pawl 17. The pm 20 may be disposed in the path of the pawl17 without being in the path of the trigger 16 bymounting said pin so asto project a slight distance from one side of the barrel. section '5,the pawl 17 beas is usual in the construction of pistols.

The means for facilitating manual-retraction of the piston 12preferablyembodies a guiding rod 22 which is slidablethroug'hthe f innerend ofthe inner barrelsection 5 and slidably telescoped within thepiston. rod 13,

.the latter being provided withfa central longitudinal bore forreception of the rod 22 'as indicated clearly in Figure 1. The rod 22 isof such length as to terminate at its forward end within the forward endportion of the rod 13 when the piston 12: is retracted, and the forwardend of said rod 22 is provided with a cross bar or rigid transverse'pin23, the ends of which are adapted to ridein a longitudinal elongatedslot 24 which is provided in the piston rod 13 so as to extendsubstantially from end to end of the latter and to intersect the bore inwhich the rod 22 is slidable. 7 It will thus be apparent that the,

rod 22 may be telescoped within the rod 13 after the piston 12 has been-retracted' so' as to freely permit feeding movement of the pis ton 12by operation ofthe trigger 16 and.

. at the same time not projectrearwardly from the rear end of the innerbarrel section 5 so 'tion will be readily understoo esired, a suitablepositions as to be in the way. On the other hand, by pulling outwardlyupon the rod 22 until the .cross bar 23 engages the inner end of theslot and also providedwith an enlarged threaded portion directly infront of the knob or handle 25 as at 26 for detachable engagement in theinner end of the barrel section 5 so that the rod 22 is releasably heldin its forwardly slid out of in Figure 1. 1

From the foregoing description itis believed that the construction andoperation as well as the advantages of the resent invenand app; ciatedbythose skilled in the art. 4

Minor changes may be made without departing from the spirit and scope ofthe invention as claimed.

What I claim as new is 1. In a lubricating device of the character t I 7described, an elongated tubular body formed 7 in two sections onethereof constituting an outer section and having means to recelve ortheway position as shown engage the outer end of-the other or innersection, a removable cap upon the other end of said outer section havinga discharge nozzle extending therefrom, a hand grip formed integralwithsaid inner section adjacent the inner end of the same, a piston bodynormally housed within said outer section, a rackbar carried by saidpiston projecting therefrom into said inner section, and triggercontrolled ratchet means pivotally mounted in said inner section andhiough the wall thereof forwardly of the hand grip portion forengagement with and actuating of said rack bar, substantially as and forthe purpose described.

2. In a ter descri ed, an elongated. tubular-barrel formed in two-partsconstituting inner and outer-sections, said outer section being designedto reoelve in one end thereof the forward end. of said inner section, aremovable cap upon the other end of said outer section projectigrease'gun structure of the charac having a discharge nozzle extendingtherefrom, a hand grip formed integral with and extending from the wallof said inner section adjacent the rear end element within carried bysaid ement and extending rearwardly therefrom into the inner section, atrigger element pivoted within the inner of the-same, a piston sectionand extending through the wall of thesame to depend forwardly of thehand gr p, a pawl member pivotally carried upon sa d trigger within theinner section and fiid outer section, a rack bar to engage said rack anda spring element connecting said pawl with the Wall of the sectionhousing the same, to bring aboutthe engagement of the same with saidrack, said rack having a longitudinally extending bore formed thereinfrom the rear end to apoint adjacent the piston and further havinglaterally opening slots formed therethrough, and a guide bar carried bythe rear portion of said rear section extending longitudinallytherethrough and further-extending into the longitudinal boreofsaid'ra-ck toislidably supportthe same, and pin members carried by said harat'its forward end for extension through said lateral openings; o

In testimony whereof I aflix my s'ignature.

- EDWIHN JiHoLsT.

